private void ExportMaterial(Material materialNode, BabylonScene babylonScene)
{
var name = materialNode._Mtl.Name;
var id = materialNode.GetGuid().ToString();
RaiseMessage(name, true);
if (materialNode.NumSubMaterials > 0)
{
var babylonMultimaterial = new BabylonMultiMaterial();
babylonMultimaterial.name = name;
babylonMultimaterial.id = id;
var guids = new List<string>();
for (var index = 0; index < materialNode.NumSubMaterials; index++)
{
var subMat = materialNode.GetSubMaterial(index) as Material;
if (subMat != null)
{
guids.Add(subMat.GetGuid().ToString());
if (!referencedMaterials.Contains(subMat))
{
referencedMaterials.Add(subMat);
ExportMaterial(subMat, babylonScene);
}
}
else
{
guids.Add(Guid.Empty.ToString());
}
}
babylonMultimaterial.materials = guids.ToArray();
babylonScene.MultiMaterialsList.Add(babylonMultimaterial);
return;
}
var babylonMaterial = new BabylonMaterial();
babylonMaterial.name = name;
babylonMaterial.id = id;
babylonMaterial.ambient = materialNode.GetAmbient(0).ToArray();
babylonMaterial.diffuse = materialNode.GetDiffuse(0).ToArray();
babylonMaterial.specular = materialNode.GetSpecular(0).Scale(materialNode.GetShinyStrength(0));
babylonMaterial.specularPower = materialNode.GetShininess(0) * 256;
babylonMaterial.emissive = materialNode.SelfIlluminationColorOn ? materialNode.GetSelfIllumColor(0).ToArray() : materialNode.GetDiffuse(0).Scale(materialNode.GetSelfIllumination(0));
babylonMaterial.alpha = 1.0f - materialNode.GetTransparency(0);
var stdMat = materialNode._Mtl.GetParamBlock(0).Owner as IStdMat2;
if (stdMat != null)
{
// Textures
babylonMaterial.ambientTexture = ExportTexture(stdMat, 0, babylonScene); // Ambient
babylonMaterial.diffuseTexture = ExportTexture(stdMat, 1, babylonScene); // Diffuse
babylonMaterial.specularTexture = ExportTexture(stdMat, 2, babylonScene); // Specular
babylonMaterial.emissiveTexture = ExportTexture(stdMat, 5, babylonScene); // Emissive
babylonMaterial.opacityTexture = ExportTexture(stdMat, 6, babylonScene); // Opacity
babylonMaterial.bumpTexture = ExportTexture(stdMat, 8, babylonScene); // Bump
babylonMaterial.reflectionTexture = ExportTexture(stdMat, 9, babylonScene); // Reflection
// Constraints
if (babylonMaterial.diffuseTexture != null)
{
babylonMaterial.emissive = new [] { 1.0f, 1.0f, 1.0f };
}
if (babylonMaterial.emissiveTexture != null)
{
babylonMaterial.emissive = new float[]{0, 0, 0};
}
if (babylonMaterial.opacityTexture != null && babylonMaterial.diffuseTexture != null &&
babylonMaterial.diffuseTexture.name == babylonMaterial.opacityTexture.name &&
babylonMaterial.diffuseTexture.hasAlpha && !babylonMaterial.opacityTexture.getAlphaFromRGB)
{
// This is a alpha testing purpose
babylonMaterial.opacityTexture = null;
babylonMaterial.diffuseTexture.hasAlpha = true;
RaiseWarning("Opacity texture was removed because alpha from diffuse texture can be use instead", true);
RaiseWarning("If you do not want this behavior, just set Alpha Source = None on your diffuse texture", true);
}
}
babylonScene.MaterialsList.Add(babylonMaterial);
}
private BabylonMaterial DumpMaterial(Material material, Renderer renderer)
{
if (!materialsDictionary.ContainsKey(material.name))
{
var bMat = new BabylonMaterial
{
name = material.name,
id = Guid.NewGuid().ToString(),
diffuse = new float[4],
specular = new float[4]
};
bMat.diffuse[0] = 1.0f;
bMat.diffuse[1] = 1.0f;
bMat.diffuse[2] = 1.0f;
bMat.diffuse[3] = 1.0f;
if (material.HasProperty("_Color"))
{
bMat.diffuse = material.color.ToFloat();
}
if (material.HasProperty("_SpecColor"))
{
var specColor = material.GetColor("_SpecColor");
bMat.specular = specColor.ToFloat();
}
if (material.HasProperty("_Shininess"))
{
var specShininess = material.GetFloat("_Shininess");
bMat.specularPower = specShininess * 128;
}
if (material.HasProperty("_Emission"))
{
var emissiveColor = material.GetColor("_Emission");
bMat.emissive = emissiveColor.ToFloat();
}
if (material.mainTexture)
{
var mainTexturePath = AssetDatabase.GetAssetPath(material.mainTexture);
bMat.diffuseTexture = new BabylonTexture
{
uScale = material.mainTextureScale.x,
vScale = material.mainTextureScale.y,
uOffset = material.mainTextureOffset.x,
vOffset = material.mainTextureOffset.y
};
var mainTexture2D = material.mainTexture as Texture2D;
CopyTexture(mainTexturePath, mainTexture2D, bMat.diffuseTexture);
var alphaCuttOff = 0f;
if (material.HasProperty("_Cutoff"))
{
alphaCuttOff = material.GetFloat("_Cutoff");
}
if ((mainTexture2D && mainTexture2D.alphaIsTransparency) || alphaCuttOff > 0)
{
bMat.diffuseTexture.hasAlpha = true;
bMat.backFaceCulling = false;
}
bMat.diffuse[0] = 1.0f;
bMat.diffuse[1] = 1.0f;
bMat.diffuse[2] = 1.0f;
bMat.diffuse[3] = 1.0f;
}
bMat.bumpTexture = DumpTextureFromMaterial(material, "_BumpMap");
bMat.emissiveTexture = DumpTextureFromMaterial(material, "_Illum");
bMat.ambientTexture = DumpTextureFromMaterial(material, "_LightMap");
bMat.reflectionTexture = DumpTextureFromMaterial(material, "_Cube");
//if (bMat.ambientTexture == null && renderer.lightmapIndex >= 0 && renderer.lightmapIndex != 255 && LightmapSettings.lightmaps.Length > renderer.lightmapIndex)
//{
// var lightmap = LightmapSettings.lightmaps[renderer.lightmapIndex].lightmapFar;
// bMat.ambientTexture = DumpTexture(lightmap);
// bMat.ambientTexture.coordinatesIndex = 1;
// bMat.ambientTexture.uScale = renderer.lightmapTilingOffset.x;
// bMat.ambientTexture.vScale = renderer.lightmapTilingOffset.y;
// bMat.ambientTexture.uOffset = renderer.lightmapTilingOffset.z;
// bMat.ambientTexture.vOffset = renderer.lightmapTilingOffset.w;
//}
materialsDictionary.Add(bMat.name, bMat);
return bMat;
}
return materialsDictionary[material.name];
}
private void ExportMaterial(IMtl materialNode, BabylonScene babylonScene)
{
var name = materialNode.Name;
var id = materialNode.GetGuid().ToString();
RaiseMessage(name, 1);
if (materialNode.NumSubMtls > 0)
{
var babylonMultimaterial = new BabylonMultiMaterial {name = name, id = id};
var guids = new List<string>();
for (var index = 0; index < materialNode.NumSubMtls; index++)
{
var subMat = materialNode.GetSubMtl(index);
if (subMat != null)
{
guids.Add(subMat.GetGuid().ToString());
if (!referencedMaterials.Contains(subMat))
{
referencedMaterials.Add(subMat);
ExportMaterial(subMat, babylonScene);
}
}
else
{
guids.Add(Guid.Empty.ToString());
}
}
babylonMultimaterial.materials = guids.ToArray();
babylonScene.MultiMaterialsList.Add(babylonMultimaterial);
return;
}
var babylonMaterial = new BabylonMaterial
{
name = name,
id = id,
ambient = materialNode.GetAmbient(0, false).ToArray(),
diffuse = materialNode.GetDiffuse(0, false).ToArray(),
specular = materialNode.GetSpecular(0, false).Scale(materialNode.GetShinStr(0, false)),
specularPower = materialNode.GetShininess(0, false)*256,
emissive =
materialNode.GetSelfIllumColorOn(0, false)
? materialNode.GetSelfIllumColor(0, false).ToArray()
: materialNode.GetDiffuse(0, false).Scale(materialNode.GetSelfIllum(0, false)),
alpha = 1.0f - materialNode.GetXParency(0, false)
};
var stdMat = materialNode.GetParamBlock(0).Owner as IStdMat2;
if (stdMat != null)
{
babylonMaterial.backFaceCulling = !stdMat.TwoSided;
babylonMaterial.wireframe = stdMat.Wire;
// Textures
BabylonFresnelParameters fresnelParameters;
babylonMaterial.ambientTexture = ExportTexture(stdMat, 0, out fresnelParameters, babylonScene); // Ambient
babylonMaterial.diffuseTexture = ExportTexture(stdMat, 1, out fresnelParameters, babylonScene); // Diffuse
if (fresnelParameters != null)
{
babylonMaterial.diffuseFresnelParameters = fresnelParameters;
}
babylonMaterial.specularTexture = ExportTexture(stdMat, 2, out fresnelParameters, babylonScene); // Specular
babylonMaterial.emissiveTexture = ExportTexture(stdMat, 5, out fresnelParameters, babylonScene); // Emissive
if (fresnelParameters != null)
{
babylonMaterial.emissiveFresnelParameters = fresnelParameters;
if (babylonMaterial.emissive[0] == 0 &&
babylonMaterial.emissive[1] == 0 &&
babylonMaterial.emissive[2] == 0)
{
babylonMaterial.emissive = new float[]{1, 1, 1};
}
}
babylonMaterial.opacityTexture = ExportTexture(stdMat, 6, out fresnelParameters, babylonScene, false, true); // Opacity
if (fresnelParameters != null)
{
babylonMaterial.opacityFresnelParameters = fresnelParameters;
}
babylonMaterial.bumpTexture = ExportTexture(stdMat, 8, out fresnelParameters, babylonScene); // Bump
babylonMaterial.reflectionTexture = ExportTexture(stdMat, 9, out fresnelParameters, babylonScene, true); // Reflection
if (fresnelParameters != null)
{
if (babylonMaterial.reflectionTexture == null)
{
RaiseWarning("Fallout cannot be used with reflection channel without a texture", 2);
}
else
{
babylonMaterial.reflectionFresnelParameters = fresnelParameters;
}
}
// Constraints
if (babylonMaterial.diffuseTexture != null)
{
babylonMaterial.diffuse = new [] { 1.0f, 1.0f, 1.0f };
}
if (babylonMaterial.emissiveTexture != null)
{
babylonMaterial.emissive = new float[]{0, 0, 0};
}
if (babylonMaterial.opacityTexture != null && babylonMaterial.diffuseTexture != null &&
babylonMaterial.diffuseTexture.name == babylonMaterial.opacityTexture.name &&
babylonMaterial.diffuseTexture.hasAlpha && !babylonMaterial.opacityTexture.getAlphaFromRGB)
{
// This is a alpha testing purpose
babylonMaterial.opacityTexture = null;
babylonMaterial.diffuseTexture.hasAlpha = true;
RaiseWarning("Opacity texture was removed because alpha from diffuse texture can be use instead", 2);
RaiseWarning("If you do not want this behavior, just set Alpha Source = None on your diffuse texture", 2);
}
}
babylonScene.MaterialsList.Add(babylonMaterial);
}
